Polishing-machine



(No Model.)

Sweets-Sheet 1.

J. B. BENNETT.

POLISHING MACHINE.

Patented Dec. 2, 1 890.

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(No Model.) 5 Sheets-Sheet 4.

J. B. BENNETT. POLISHING MACHINE.

No. 441,636. Patented Dec. 2, 1890. 4

(No Model.) 5 Sheets-Shet f5. J. B. BENNETT. POLISHING MACHINE.

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| IIIIHIIIIIIIII- j w- UNITED STATES PAT NT fission.

JOSEPH B. BENNETT, OF WATERTOWRASSIGNOR, BY MESNE ASSIGNMENTS,

TO THE BERLIN MACHINE IVORKS, OF BELOIT, \VISCONSIN. A

POLISHING-I-MACHINE.

SPECIFICATION forming part of Letters Patent No. 441,636, dated December2, 1890';

Application filed July 10, 1889. Renewed October 2,1890. Serial No.366,840. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH B. BENNETT, of \Vatertown, in the county ofJefferson and State of WVisconsin, have invented new and usefulImprovements in Polishing-Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of said invention,reference being had to the accompanying drawings, and to the letters orfigures of reference marked thereon, which form a part of thisspecification.

My invention relates to that class of polishing-machines which areadapted for finishing fiat surfaceson wood, such as the sides of doorsand many parts of the material of which the cases of pianos are made.

The novel features of my device will be hereinafter particularlyclaimed.

' In the drawings, Figure 1 is a side elevation of my improved machine.Fig. 2 is a detail of the mechanism bywhich the sand-cyl inder isreciprocated endwise, where the sandcylinder is located at right anglesto the longer axis of the machine. Fig.3 is a modified form of mechanismused for reciprocating the sand-cylinder, Where the cylinder is locatedat an inclination to the longer axis of the machine. Fig.4 is a plan ofthe complete machine with the top presser-frame and its supportedmechanism removed. Fig. 5 is a view at the side of the operating partsof the mechanism, the side frame being omitted to show those parts, anda portion of the mechanism in connection with one of the flat polishersbeing shown in section to exhibit the interior parts more completely.Fig. 6 is an enlarged detail of a bolt such as is used for supportingand adjusting the table. Fig. 7 is an under side view of a polisheradapted to reciprocate laterally. Fig. 8 is an under side View of apolisher adapted to reciprocate end wise. Figs. 9 and 10 are eachmodified forms of mechanism adapted to reciprocate the cyl inders. Fig.11 is a plan of a modified form ofa polishing-machine containing onlyflat polisher-s. Fig. 12 is a plan of a modified form of machinecontaining only a sand-cyL inder and a cutter-head *located at an angleto the transverse axis of the machine.

The same letters and figures refer to like parts in all the views.

A is the main frame, and B is the top .or presser frame, supportedadjustably upon the frame A by the screw-threaded bolts 0 O, havingbearings in the presser-frame and turning into the main frame, thepresser-frame being guided in its movements up and down by theguide-legs D D, rigid to the presserframe and traveling in slots or waystherefor in the main frame.

pinions on shafts F F, having their bearings in the presser-frame, oneof which shaftsLF is provided with a crank-handle G, whereby said shaftsare rotated and the resser-frame is raised or lowered, as desired. Theupright shafts H H H, provided with hand-wheels at their tops, areattached to mechanism adapted to raise or lower the cutter-head or asand-cylinder, respectively. p The foregoing described mechanism,lettered from A to H, is not more fully illustrated or described herein,as these partsare substantially the same as shown and described in theapplication of myself and Anson P. Boardman, filed April 22, l88.9,Se'rial No. 308,205, for apatent on a polishing-machine, and no claim ofnovelty is here made for these parts.

I is the table supported adjustably on the main frame and provided withslots for the reception therein of the cutter-head, the sandcylinders,the flat polishers, and the feed-rolls, respectively. j

The parts of the machine as thus described and lettered are of the sameform and character as in machines described and shown in applicationsfor The bolts 0 G are provided with beveled pinions E E, meshing with.

patents heretofore made by myself and A.P.Boardman,seriallynumbered306,667 and 308,205, filed, respectively, on April 10 and 22, 1889, inwhich applications these parts have been fully described, and aretherefore not further described herein, as they form no principal partof my present invention.

In polishing material for piano-cases it is important to remove allwavyridges and the slightest unevenness of the surface of the material,and to accomplish this is one of the obj'ects of my invention, and forthat purpose I use a cutter-head and a sand-cylinder, or one of them,located diagonally in the machine, and two flat olishers, onereciprocating endwise and the other laterally, or the polishers withsuch double motion alone, or the sandcylinder or'cutter-head in adiagonal position, as found most desirable for the particular work beingperformed.

The mechanism for reciprocating the cylinders and the polishers and themechanism whereby the table is adjusted and held in posit-ion are alsoparts of my invention. A cutter-head 1, having knives 2 2 securedremovably thereto, affixed to a shaft 3, having its hearings inadjustable blocks on the frame A, is located diagonally across themachine. A sand-cylinder 4, aflixed on a shaft 5, having its bearings inadj ustable'blocks on the frame, is also located diagonally across themachine, and another sand-cylinder 6 on a shaft 7, having its bearingsin adjustable blocks on the frame, is located directly across the frameat right angles to its longer axis. Two flat polishers 8 and 9 are alsolocated in a right line across the frame, one of which is adapted to bereciprocated endwise, the other of which is adapted to be reciprocatedlaterally. A number of feed-rolls 10 are supported on springs yieldingin the frame, one roll being placed in front of the cutter-head andothers severally between the cutter-head and cylinders, and between thecylinders and the polishers, and between the polishers, and one and anidle-roll 10' being located at the tail of the machine after the lastpolisher.

In the presser-frame B is located a number of feed-rolls 11 11, oneabove each of the rolls 10 10, each of which feed-rolls 11 11 isprovided with a pinion 12 at one end, meshing with the pinions 13 13,journaled 011 the presser-frame B, whereby the series of feedrolls aboveare rotated in a train by motion communicated from the pinion 12,meshing with a cog-wheel 16, which is driven by power communicatedthereto from the band-wheel shaft 17 through shaft 18 and cog-wheelsthereon, as shown in Figs. 1 and 4, respectively. Idle-rolls 14 14,having their bearings in the presser-frame B, are located above thesand-cylinders.

The shafts 3, 5, and 7 are provided with band-wheels 3, 5, and 7',respectively, for connecting them operatively with the powersupplyingmechanism. For reciprocating the cylinder 6 the shaft 7 is movableendwise in its bearings in the frame A, and the shaft is provided with aloose collar 13, riding on the shaft between the rigid shoulder 19 andthe adjustable shoulder 19'. A bent lever-arm 20 is pivoted at one endon the frame A and at the other end is bifurcate, one arm passing oneach side of the collar 13 each arm being pivoted to a reciprocatingblock 21, which blocks 21 are received and bear in ways therefor in thecollar 13. The arm 20 is pivoted centrally to a short connecting-rod 22,which at its inner end rides 011 an eccentric portion of shaft 23. Theshaft 28, supported in bearings on the frame A, is provided withpinions, which mesh with pinions on the shaft 17,

polishers are provided with blocks 24-24; and

24: 24:, respectively,which blocks are movable in ways on the under sideof the polisher, the blocks 24 24; being adapted to travel endwise ofthe polisher, and the blocks 24 24: being adapted to travel in wayslaterally, and these polishers are supported in ways 25 25 and 25 25,respectively, in the frame, whereby the polisher 9 (shown in detail inFig. 7) is permitted to reciprocate laterally, and the polisher 8 (shownin detail in Fig. 8) is permitted to reciprocate endwise in the frame.These polishers are each reciprocated by crank-wheels, one of which 26is seen in Fig.

5. These crank-wheels are each provided with a wrist, which enterapertures therefor in blocks 24 24 and 24' 24, and these crankwheels aresecured to short shafts 27, having pinions meshing with pinions ontransverse shafts 28 and 29, which shafts 28 and 29 are provided withpinions meshing with pinions on shaft 23, whereby they are rotated. Itwill be understood that by the rotation of the crank wheels 26 thepolishers are reciprocatcd by the wrists on the wheels, the blocks 24:and 24' reciprocating in one direction only, whereby the polishers arereciprocated in the direction at right angles to the movement of theblocks, and that as the blocks 24 and 24 reciprocate in directions atright angles to each other the polishers themselves reciprocate indirections at right angles to each other. Above each of the polishers 8and 9 are presser-bars 30 and 30, respectively, which are supportedmovably in vertical ways in arms 31 31, pivoted on the-presser-frame B,and are held yieldingly up to their work by springs, one of which isshown at 32.

In Fig. 9 a modified form of lever-arm 33 is shown, which is centrallypivoted on the frame, and in Fig. 10 another form of arm 34 is shown,which is pivoted to the frame at one end and is connected centrally tothe shaft of the cylinder, these two forms of arms being equivalentsforv the arms 20. (Shown in Figs. 1 and 2.)

Fig. 11 is a plan of a modified machine for using the polishers alone,and a machine thus constructed is adapted for finishing the surface offine work when it has been already polished to some extent by othermachines, it being necessary to supply a band-wheel 35 and its shaft fordriving the mechanism, which band-wheel andishaft correspond to theshaft 17 and band-wheel thereon, (shown in Fig. 1;) also, Fig. 12 showsa modified machine for doing the heavier or greater amount of polishing,in which the cutter-head, located diagonally, and a sand-cylinder inconnection therewith are used without polishers.

Fig. 6 is an enlarged view of a bolt 36, which turns by a screw-threadthrough a flange A of the frame A and is adapted for supporting andadjusting the table I vertically. The shank of the bolt 36 turns by ascrew-thread in the flange A by means of flat faces 37, to which awrench may be applied, and is held in position by the jam-nut 38 turningagainst the lower surface of the flange A. The bolt above the head isprovided with a smaller shank 39, which passes through the table I andreceives a nut 40 thereon, which turns against the table and holds itfirmly in position on the head of the bolt 36.

The feed-rolls 11 are provided with pinions,.

and other pinions journaled on the frame B, meshing with these pinions,form a train whereby the feed-rolls are rotated. These pinions are notshown in the drawings, but their places are indicated by the curvedcovering therefor. (Shown at 41 in Figs. 4, 11, and 12.) A presser-bar15is located in swinging arms 15 above the cutter-head, which presser-baris similar in construction and operation to the presser-bars 30 and 30.

No claim is herein made for the novel features in the fiat-toppedreciprocating polishers shown in Figs. 7 and 8 separately, nor in themechanism shown in these figures by which those polishers are operated,I having filed an application, Serial No. 317,329, on July 12, 1889, fora patent on these devices.

No claim is herein made for any device that is the same as or theequivalent for the bell-cranks L L and the mechanism by which they areoperated, as shown and described in applications for patents filed bymyself and Anson P. Boardman, being serially numbered 306,667 and308,205, filed April 10, 1889, and April 22, 1889, respectively.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a polishing-machine, the combination, with two rotatingsand-cylinders, one located at right angles to the longer axis of themachine and the other located diagonally to the axis of the machine, ofa shaft 23, parallel to the longer axis of the machine, a connecting-rod22, riding on an eccentric on shaft 23 and connected to a lever-arm 20,in which arm the shaft of the right-angled cylinder rides and by whichit is reciprocated at right angles to the shaft, and a jointed arm 22',riding on an eccentric on shaft 23 and connected to a lever-arm 20,inwhich the shaft of the diagonal cylinder rides and by which it isreciprocated diagonally to the shaft, both cylinders being reciprocatedsynchronously, but n different directions, by the rotation of shaft 23,substantially as described.

2. In 'a'polishing-machine, the combination, with rotatingsand-cylinders supported on the frame below the table, of a cutter-headsupported in the frame below the table and located diagonally to thelonger axis of the machine, and a presser-bar located in a presserframeabove the cutter-head, substantially as described.

3.. In a polishing-machine, two flat polishers supported on the mainframe, one polisher being constructed for and having reciprocatlngmovement laterally and the other polisher being constructed for andhaving reciprocating movement endwise, substantially as described.

4. In a po1ishing-machine, the combination,

with the shaft of a diagonally-located rotating cylinder, of a lever-arm20, pivoted at one end diagonally on the frame and at the other endconnected movablyto the shaft of the diagonal cylinder, and aconnecting-rod 22, having a central joint and pivoted at one end to thelever-arm 20 and at the other end riding on an eccentric on a shaftparallel with the longer axis of the machine, substantially asdescribed.

5. In a polis11ing-machine,the combination, with two rotatingsand-cylinders supported in the main frame below the table, one of whichcylinders is located diagonally to the longer axis of the machine, oftwo reciprocatingfiat polishers, one of which has a reclproeatingmovement laterally and the other one a reciprocating movement endwise,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH l3. BENNETT.

Witnesses:

ANNA FAUST, C. T. BENEDICT.

